Spark-arrester



13. R. PRUOGTOR.

SparkjArreste r'. No. 231,610. Patented Aug. 24, 18 80;

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N.PEIER8, PHOTO-LITHOGRAPHER, WASHINGTON, n O.

U ITED STATES PATENT OFFICE.

DAVID PEoCToE, or GLOUCESTER, ASSIGNOR To EDWIN WALDEN, OF LYNN, TRUSTEEOF THE SUCCESS SPARK ARRESTER COMPANY,

OF BOSTON, MASSACHUSETTS.

SPARK-ARRESTE R.

SPECIFICATION forming part of Letters Patent No. 231,610, dated August24, 1880. Application filed March 22, 1879.

To all whom it mag concern:

Be it known that I, DAVID R. PROGTOR, of Gloucester, in the county ofEssex and State of Massachusetts, have invented certain Improvements inSpark-Arresters, of which the following is a specification.

This invention relates to that class of sparkarresters in which sparksand Cinders are conductedfrom the smoke-stack to a receiver in the rear.

The object of my invention is to provide for locomotive-engines anapparatus which shall effectually arrest and collect the sparks,cinders, and dust without obstructing the draft of the engine. It alsohas for its object to provide means whereby the nettings of locomotivesmoke-stacks may be easily removed and turned or rotated; also, toprevent the smoke and exhaust steam or vapor escaping from a locomotivefrom trailing'down intothe space between the engine and the succeedingcar; and, finally, to provide convenient means for removing thecollected sparks, Cinders, &c., from theirplace of deposit.

To these ends my invention consists in the improvements which 1 will nowproceed to describeand claim.

Of the accompanying drawings, forming a part of this specification,Figure 1. represents a side view of a locomotive provided with myinvention. Fig. Zrepresents a top view of the apparatus embodying myinvention, none of the engine being shown excepting the top of the caband stack. Fig. 3 represents a section on line w w, Fig.2; Fig.irepresents a sectional perspectiveview of a portion of the.

netting ofa smoke-stack and its holder. Fig. 5' represents a rear viewof the curved top or mouth of the smoke-stack. Figs. 6 and 7 repsent,respectively, side and top views of the chamber with a deflector.

Similar letters of reference indicate like parts in all the figures.

In the drawings, A represents the body of the smoke-stack, whichis ofordinary construction. p

B represents a curved end or month, which is applied to the stack, andis formed to deflect the current passing through the stack to ahorizontal direction, as indicated. The end or mouth B iscylindricalwhere it joins the body of the stack, and is flattened orelongated to an oval shape at its upper end, as shown in Figs. 3 and 5.

0 represents a chamber about eight inches deep, which constitutes anextension of the stack B, and is arranged to receive the current passingfrom the top B. The chamber extends back a sufficient distance tocontain a netted opening, D, of considerable size-say three feetacross--(which opening is entirely in the rear of the end or month,) andto form an imperforate hood or guard, c, behind the opening, which hoodor guard is a portion of the top of the chamber. The rear end of thechamber O is preferably semicircular or rounded.

E E represent eduction-pipes, each about four inches in diameter,leading backwardly from the chamber 0. These pipes Communicate with thechamber through a flaring mouth, E, under the hood or guard 0, whichmouth is practically a continuation of the semicircular end of thechamber.

If desired, a single pipe of larger area may be employed instead of twopipes; but I prefer to use two, in order that they may pass on each sideof the whistle of the locomotive.

F represents a receiver located on the roof of the cab. This receiver ispreferably about eight inches deep, and of a length somewhat less thanthat of the cab. Its forward end is preferably pointed, as shown in Fig.2. The

pipesEE enter the forward end of the receiver.

Grepresents a netted opening in the forward portion of the receiver,which opening is preferably about two-thirds of the area of the openingD in the chamber. The interior of the receiver back of the opening Grforms a cavern or receptacle which is practically tight, or, in otherwords, closed, so that no exit or opening of any considerable size isafforded behind the opening G, excepting oneor more discharge-openings,H, which are closed, excepting when the contents of the receiver arebeing removed. The discharge-openin gs H are preferably short tubesorflues extending downwardly from the rear portion of the receiver, andadapted to discharge matter from the receiver to the tender of thelocomotive.

The operation of this apparatus is as follows: The upward current ofgases, steam, sparks, &c., passing through the stack is deflected by themouth and caused to enter the chamber 0 in a horizontal direction, thecinders, sparks, and dust being driven by the force of the ex: haustdirectly across the chamber to the rounded rear end and into the mouthE. The

sides and bottom of' the chamber converge or curve gradually to themouth E, as shown in Figs. 2 and 3, so that the current meets no salientangles nor opposing surfaces. The bottom of the chamber is provided withan incline, c, which is flush with the bottom of the month E, and thesides of the chamber join the sides of the mouth with a gentle curve.The current, as it enters the rounded end of the chamber, and thecontracted mouth E is divided, the most of the lighter material (thegases, smoke, &c.,) escaping upwardly through the opening D, while theheavier cinders and coal-dust, with the residue of the smoke, gases, andsteam, are forced onward horizontally through the pipes E E to thereceiver F, into which they are projected with sufflcient force toaccumulate the sparks, cinders, and dust in a solid mass at the rear endor cavern of said receiver. The gases, steam, and smoke passing throughthe pipes E escape through 5 the opening G, which is located so near thefront end of the receiver that the escaping steam and gases cannotagitate and carry with them the cinders, sparks, and dust collected atthe rear portion or cavern of the re- 0 ceiver. In fact, the force ofthe gases entering the receiver is not sufficient to agitate the sparks,cinders, and dust after they are deposited therein, the largerproportion of the gases and steam escaping through the opening 5 D ofthe chamber, so that the remaining portion is just sufficient tofacilitate the passage of the sparks, cinders, and dust and deposit themin the rear end of the receiver, as described.

I have found by a practical test of several months on a locomotive thatthe described apparatus separates not only the sparks and largercinders, but also a very large proportion of dust and minute cinders andsolid 5 5 particles from the smoke and gases, so that there is noannoyance to passengers on the train from the dust or any of the usualemanations from the locomotive, excepting the smoke, which is sopurified that it is hardly 6o perceptible.

The netting n, that covers the opening D, is preferably riveted orclamped to a rim g, 1", which rests in a rabbeted ring or seat, 1',attached in any suitable way to the chamber 0. The

6 5 ring 0" is detachable from the ring 1, and the latter is providedwith pivoted buttons 1), or

other movable fastenings', whereby the ring 4 may be secured andreleased. This arrangement enables the netting to be easily removed forrepairs, renewal, or adjustment without disturbing the stack.

I prefer to provide the receiver with one or more rakes or hoes, h,having handles proj ectin g through holesin the end of the receiver, sothat they can be operated bya person standing on the tender of theengine to draw the accumulated matter in the receiver to the dischargepipe or pipes H. The holes through which the handles pass should beprovided with suit- -abie packings, movable or otherwise, to preventsteam, gases, &c., from escaping when the engine is in operation.

01 represents a deflector or flange on the roof of the cab, extending,preferably, from the front end of the same backwardly and behind thereceiver. This deflector is inclined backwardly at its rear portion, andis considerably higher than the receiver. Its sides are preferablycurved to join the inclined back, and the curved portions are preferablycurved inwardly at their upper edges, as shown at d d. This deviceprevents the smoke and steam escaping from the openings D GrfIOlll beingdrawn downwardly behind the cab by atmospheric pressure, the curvedinclined back of the de- 5 flector forming a chute or guide, whichdirects the steam, smoke, &c.,inwardly and upwardly, as shown by thearrows in Figs. 1 and 2.

If desired, an upwardly-curved deflector, (1 may be placed on thechamber 0, back of the opening D, as shown in Figs. 6 and 7, 'to preventthe smoke, steam, &c., from trailing down into the space between thechamber and the cab.

I claim as my invention-- 1. In a locomotive spark-arresting apparatus,the combination, with a smoke-stack and a pipe or pipes, E, extendingbackwardly therefrom, of a receiver arranged to receive in its forwardend the pipe or pipes E, provided with a netted opening, G, for theescape of steam, smoke, and gases, in the forward portion of its top,and extended backwardly from such opening to form a cavern or receptaclefor cinders, dust, &c., beyond the agitating influence of the gases,steam, and smoke escaping through the opening G, as set forth.

2. The receiver F, located on the roof of the cab and provided with adischarge-opening, H, and a hoe, h, having a handle projectin g througha hole in the rear wall of the receiver and adapted to be moved by saidhandle to draw the accumulated cinders, 850., in the receptacle into thedischarge-opening H, as set forth.

3. As a means for preventing the smoke of a locomotive from trailingdownwardly behind the cab, a smoke guide or deflector on the roof of thecab, formed as shown, to give an upward 1 0 direction to smoke passingover the roof.

4.. In a smoke-stack, a metallic ring providedwith a netting, combinedwith a, rebname to this specification, in the presence of beted holderor seat adapted to receive the two subscribing Witnesses, this 19th dayof 10 ring, and provided with buttons or movable March, 1879.

fastenings adapted to hold the ring in place, 5 and also adapted to bedisplaced to permit the DAVID PROGTOR' ring to be turned on its seat orremoved there- Witnesses from, as set forth. 0. F. BROWN,

In testimony whereof I have signed my GEO. W. PIERCE.

